Lucene.Net.QueryParsers.Flexible.Core.Nodes.BooleanQueryNode.ToQueryString C# (CSharp) Метод

        public override string ToQueryString(IEscapeQuerySyntax escapeSyntaxParser)
        {
            var children = GetChildren();
            if (children == null || children.Count == 0)
                return "";

            StringBuilder sb = new StringBuilder();
            string filler = "";
            foreach (IQueryNode child in children)
            {
                sb.Append(filler).Append(child.ToQueryString(escapeSyntaxParser));
                filler = " ";
            }

            // in case is root or the parent is a group node avoid parenthesis
            if ((Parent != null && Parent is GroupQueryNode)
                || IsRoot)
                return sb.ToString();
            else
                return "( " + sb.ToString() + " )";
        }